Fabric and kinematic study of the Bíteš orthogneiss (southwestern Moravia): Result of large-scale northeastward shearing parallel to the Moldanubian/Moravian boundary

摘要: Abstract The body of the Bites orthogneiss (BO) in southwestern Moravia was affected by ductile shear deformation probably late Variscan age. North to northeast-directed shearing is indicated orientation sheath fold axes, S - C fabric, strong asymmetrical c -axis preferred and NE-dipping bands. Deformational structures (stretching lineation, mylonitic foliation folds) associated with thrust-wrench tectonics are connected lower amphibolite green schist facies metamorphism. A strain study shows complex fabric development from core boundaries BO thrust sheet. Fabrics characterized oblate ellipsoids, low intensity quartz fabrics that can be approximated small circle girdles centred around Z finite strain. Strain ellipsoids near sheet mostly prolate high diagrams show single or incomplete crossed highly respect structural framework. coaxial history core, noncoaxial which prevails at sheet, interpreted as a result different paths framework crustal-scale zone.